/Engine/Source/Runtime/CoreUObject/Public/UObject/PackageTrailer.h
Returns an array of the payloads with the given storage type.  EPayloadStoragetype
[TArray](API\Runtime\Core\Containers\TArray)< [FIoHash](API\Runtime\Core\IO\FIoHash) > GetPayloads ( [EPayloadStorageType](API\Runtime\CoreUObject\UObject\UE__EPayloadStorageType) StorageType ) const